Pumping jack



June 26, 1934. J. MINNICH 1,964,670

PUMPING JACK Filed July 11, 1932 Patented June 26, 1934 UNITED STATESPATENT OFFICE This invention relates to pumping jacks especially adaptedfor use in connection with reciprocating pumps.

, Briefly stated, an important object of this invention is to provide apumping jack having simple and eflicient means for transmitting themotion of a pumping power to the polish rod of a deep well pump to theend that binding of the parts is prevented and a full working stroke isassured.

A further aim is to provide a pumping jack of the character specified inwhich the several parts thereof are easily assembled and areindividually accessible for repair or replacement and in which thearrangement of parts is such that the same may be compactly arranged fortransportation on a truck or the like to the point of use.

Other objects and advantages will be apparent during the course of thefollowing description.

In the accompanying drawing forming a part of this application and inwhich like numerals are employed to designate like parts throughout thesame,

Figure 1 is a side elevation of the improved pumping jack in use,

Figure 2 is a horizontal sectional view taken on line 2-2 of Figure 1,

Figure 3 is a vertical transverse sectional view taken on line 3-3 ofFigure 2,

Figure 4 is a fragmentary perspective illustrating the connectionbetween upper and lower motion transmitting links embodied in theinvention.

In the drawing, wherein for the purpose of illustration is shown apreferred embodiment of the invention, the numeral 5 designates a baseconsisting of spaced parallel members of suitable cross-sectionalformation and of an appropriate material such, for example, as metal.

As shown in Figures 1 and 2, the base 5 has connected thereto a standard6 commonly known as a Samson post and consisting of supports secured tothe spaced parallel base members 5 and converging toward the upperportions thereof to provide a resting and attaching surface for thebearings 8. More specifically, the converging supports forming thestandard 6 consist of legs converging toward the upper portions thereofand 1 having the lower portions thereof secured by bolts 10 or otherfastening devices to the base 5. In

other words, the standard 6 is a iour-legged structure secured at spacedpoints to the parallel base members 5 so that a firm and rigid 55connection between the standard and the base is provided, suchconnection being inward of the ends of the base member.

Referring now to Figure 2 it will be seen that the spaced parallelmembers of the base 5 are joined by transverse beams 12, one of which isformed with an upstanding apertured ear 14 to which the forked orbifurcated lower portion of a motion transmitting link 16 ishorizontally pivoted as indicated at 18.

By forking or forming the lower portion of the link 16 from a pair ofspaced parallel attaching members, the link 16 is caused to rock aboutthe longitudinal axis of the pin 18 and is firmly held against lateraltilting or yielding under the influence of the power applied thereto.

In explaining this point, attention is invited to Figure 1, in which itis illustrated that the upper portion of the link 16 is formed with atransverse opening receiving the shank of an attaohing arm 20, the armbeing extended laterally from the link and having pivotal connectionwith one of the power lines 24 of a pumping power not shown. To thoseacquainted with the art it will be apparent that the power line 24 isreciprocated by a remote pumping power and the motion thus imparted tothe line 24 is utilized to rock the link 16 and, as suggestedpreviously, such movement of the power line is prevented from tiltingthe link 16.

It is clearly shown in Figures 1 and 4 that a bearing block 30 isconfined between the sides of the link 16 and a fastening bolt 32 isextended through the block and the spaced sides of the link 16 tosecurely connect these parts.

Attention is now invited to Figure 4 in which it is illustrated that thebearing block 30 is provided with a transversely extending connectingpin 40 to which the lower terminal portions of spaced parallel links 42are horizontally pivoted. The upper portions of the links 42 areconnected to the walking beam 48 through the intervention of a pivotelement 46, and, it will be seen that the connection between the pivotelement 46 and the link 42 provides for adjustment of the relation ofthe links 42 to the walking beam.

The forward portion of the walking beam is shown to be formed with theusual saddles 60 for connection with the polish rod 62 through theintervention of a conventional or other polish rod 64.

The rear portion of the walking beam is provided with abearing 68 forattachment of a counterbalance should one be desired or required.

In operation, the improved pumping jack is set up at the well and whenthe laterally pro- 110 jecting attaching arm 20 is attached to the powerline 24 as shown in Figure 1, the beam is rocked to bring aboutreciprocation of the polish rod.

It has been found that the highly simplified arrangement of the variousmotion transmitting elements provides for the efficient transmission ofthe power from the power line 24 to the polish rod 26 and at the sametime, such arrangement allows of the easy setting up of the jack andallowing of the ready inspection and individual removal of the parts forthe purpose of renewal.

Having thus described the invention, what is claimed as new is:

A pump jack of the class described comprising a base, a standard risingfrom said base and consisting of legs secured at their lower ends to thebase and a bearing supported by the upper ends of the legs, a walkingbeam pivoted intermediate its length to said bearing and having sidebars spaced from each other, means at the rear end of said walking beamfor engaging a polish rod, a bearing for a counterweight at the frontend of said walking beam, and means for controlling movement of saidwalking beam consisting of lower links pivoted to said base and spacedtransversely from each other, a block secured between said links inspaced relation to the upper ends thereof and projecting forwardly fromthe links, an arm pivoted between the upper ends of said links andprojecting forwardly over said block for connection with a power line,upper links pivotally connected with the forward portion of said blockand extending upwardly at opposite sides of the lower links and walkingbeam, and a pivot pin connecting upper ends of the upper links andslidably resting upon the side bars of said walking beam back of thebearing at the front ends thereof, said pin having a depending armengaged between side bars of the walking beam to limit transversemovement of the links and walking beam relative to each other, and thebearing at the front end of the walking beam constituting an abutment toengage the pivot pin and limit sliding movement of the pin forwardlyalong the walking beam.

JOE MINNICH.

